Not really... in 8 years of running CentMin on CentOS (and now AlmaLinux) I've never had an issue....
If one is experienced with Linux, then it's not a big issue. Hardest thing is logging in regularly and running cmupdate
and the OS updates... and I guarantee you that bang for the buck, the self-hosted "gets you there". 🚬
Now, if you don't want the "hassles", and don't mind spending the extra money for removing those "hassles"... then the SaaS solution is better.
There are still hassles involved no matter which solution you choose. Email is one of the simple ones.